diff --git a/Project.toml b/Project.toml
index 5eec42f..062715c 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,6 +1,6 @@
 name = "IndexedTables"
 uuid = "6deec6e2-d858-57c5-ab9b-e6ca5bd20e43"
-version = "1.0.1"
+version = "1.0.2"
 
 [deps]
 DataAPI = "9a962f9c-6df0-11e9-0e5d-c546b8b5ee8a"
@@ -27,7 +27,7 @@ IteratorInterfaceExtensions = "0.1.1, 1"
 OnlineStatsBase = "1"
 PooledArrays = "0.4.1, 0.5, 1.0"
 StatsBase = "0.32, 0.33, 0.34"
-StructArrays = "0.4.1"
+StructArrays = "0.5"
 TableTraits = "0.3, 0.4, 1"
 TableTraitsUtils = "0.2.1, 0.3, 0.4, 1"
 Tables = "0.2.4, 1"
diff --git a/src/IndexedTables.jl b/src/IndexedTables.jl
index ade1028..1948199 100644
--- a/src/IndexedTables.jl
+++ b/src/IndexedTables.jl
@@ -4,7 +4,8 @@ using PooledArrays, SparseArrays, Statistics, WeakRefStrings
 
 using OnlineStatsBase: OnlineStat, fit!
 
-using StructArrays: StructVector, StructArray, fieldarrays,
+import StructArrays
+using StructArrays: StructVector, StructArray,
     refine_perm!, collect_structarray,
     append!!, replace_storage, GroupPerm,
     roweq, index_type
diff --git a/src/columns.jl b/src/columns.jl
index b63b30c..10c7bb8 100644
--- a/src/columns.jl
+++ b/src/columns.jl
@@ -51,8 +51,8 @@ available selection options and syntax.
 """
 function columns end
 
-columns(c::Columns) = fieldarrays(c)
-columns(c::Columns{<:Tuple}) = Tuple(fieldarrays(c))
+columns(c::Columns) = StructArrays.components(c)
+columns(c::Columns{<:Tuple}) = Tuple(StructArrays.components(c))
 columns(c::Columns{<:Pair}) = c.first => c.second
 
 """
@@ -75,7 +75,7 @@ summary(c::Columns{D}) where {D<:Tuple} = "$(length(c))-element Columns{$D}"
 _sizehint!(c::Columns, n::Integer) = (foreach(x->_sizehint!(x,n), columns(c)); c)
 
 function _strip_pair(c::Columns{<:Pair})
-    f, s = map(columns, fieldarrays(c))
+    f, s = map(columns, StructArrays.components(c))
     (f isa AbstractVector) && (f = (f,))
     (s isa AbstractVector) && (s = (s,))
     Columns((f..., s...))
@@ -104,15 +104,15 @@ pushrow!(to::AbstractArray, from::AbstractArray, i) = push!(to, from[i])
 @generated function row_asof(c::Columns{D,C}, i, d::Columns{D,C}, j) where {D,C}
     N = length(C.parameters)
     if N == 1
-        ex = :(!isless(getfield(fieldarrays(c),1)[i], getfield(fieldarrays(d),1)[j]))
+        ex = :(!isless(getfield(StructArrays.components(c),1)[i], getfield(StructArrays.components(d),1)[j]))
     else
-        ex = :(isequal(getfield(fieldarrays(c),1)[i], getfield(fieldarrays(d),1)[j]))
+        ex = :(isequal(getfield(StructArrays.components(c),1)[i], getfield(StructArrays.components(d),1)[j]))
     end
     for n in 2:N
         if N == n
-            ex = :(($ex) && !isless(getfield(fieldarrays(c),$n)[i], getfield(fieldarrays(d),$n)[j]))
+            ex = :(($ex) && !isless(getfield(StructArrays.components(c),$n)[i], getfield(StructArrays.components(d),$n)[j]))
         else
-            ex = :(($ex) && isequal(getfield(fieldarrays(c),$n)[i], getfield(fieldarrays(d),$n)[j]))
+            ex = :(($ex) && isequal(getfield(StructArrays.components(c),$n)[i], getfield(StructArrays.components(d),$n)[j]))
         end
     end
     ex
@@ -222,7 +222,7 @@ column(c, x) = columns(c)[colindex(c, x)]
 
 # optimized method
 @inline function column(c::Columns, x::Union{Int, Symbol})
-    getfield(fieldarrays(c), x)
+    getfield(StructArrays.components(c), x)
 end
 
 column(t, a::AbstractArray) = a
@@ -624,5 +624,5 @@ function init_inputs(f::Tup, input, isvec)
 end
 
 # utils
-refs(v::Columns) = Columns(map(refs, fieldarrays(v)))
+refs(v::Columns) = Columns(map(refs, StructArrays.components(v)))
 compact_mem(v::Columns) = replace_storage(compact_mem, v)
diff --git a/src/join.jl b/src/join.jl
index 4a22ea2..6716893 100644
--- a/src/join.jl
+++ b/src/join.jl
@@ -10,8 +10,8 @@ function rowcmp(tc::Tuple, i, td::Tuple, j)
 end
 
 function rowcmp(c::Columns, i, d::Columns, j)
-    tc = Tuple(fieldarrays(c))
-    td = Tuple(fieldarrays(d))
+    tc = Tuple(StructArrays.components(c))
+    td = Tuple(StructArrays.components(d))
     return rowcmp(tc, i, td, j)
 end
 
@@ -79,7 +79,7 @@ nullrow(T, M) = missing_instance(M)
 nullrowtype(::Type{T}, ::Type{S}) where {T<:Tup, S} = map_params(t -> type2missingtype(t, S), T)
 nullrowtype(::Type{T}, ::Type{S}) where {T, S} = type2missingtype(T, S)
 
-nullablerows(s::Columns{C}, ::Type{S}) where {C, S} = Columns{nullrowtype(C, S)}(fieldarrays(s))
+nullablerows(s::Columns{C}, ::Type{S}) where {C, S} = Columns{nullrowtype(C, S)}(StructArrays.components(s))
 nullablerows(s::AbstractVector, ::Type{S}) where {S} = vec_missing(s, S)
 
 function init_left_right(ldata::AbstractVector{L}, rdata::AbstractVector{R}) where {L, R}
@@ -247,8 +247,8 @@ function Base.join(f, left::Dataset, right::Dataset;
     rdata = replace_placeholder(right, rdata)
 
     KT = map_params(promote_type, eltype(lkey), eltype(rkey))
-    lkey = Columns{KT}(Tuple(fieldarrays(lkey)))
-    rkey = Columns{KT}(Tuple(fieldarrays(rkey)))
+    lkey = Columns{KT}(Tuple(StructArrays.components(lkey)))
+    rkey = Columns{KT}(Tuple(StructArrays.components(rkey)))
     join_iter = GroupJoinPerm(GroupPerm(lkey, lperm), GroupPerm(rkey, rperm))
     init = !group && f === concat_tup ? init_left_right(ldata, rdata) : nothing
     typ, grp = Val{how}(), Val{group}()
diff --git a/src/ndsparse.jl b/src/ndsparse.jl
index 219ad87..d201705 100644
--- a/src/ndsparse.jl
+++ b/src/ndsparse.jl
@@ -209,7 +209,7 @@ _convert(::Type{<:Tuple}, tup::Tuple) = tup
 _convert(::Type{T}, tup::Tuple) where {T<:NamedTuple} = T(tup)
 convertkey(t::NDSparse{V,K,I}, tup::Tuple) where {V,K,I} = _convert(eltype(I), tup)
 
-ndims(t::NDSparse) = length(fieldarrays(t.index))
+ndims(t::NDSparse) = length(StructArrays.components(t.index))
 length(t::NDSparse) = (flush!(t);length(t.index))
 eltype(::Type{NDSparse{T,D,C,V}}) where {T,D,C,V} = T
 Base.keytype(::Type{NDSparse{T,D,C,V}}) where {T,D,C,V} = D
diff --git a/src/selection.jl b/src/selection.jl
index ae33423..93c8db4 100644
--- a/src/selection.jl
+++ b/src/selection.jl
@@ -138,7 +138,7 @@ missing_indxs(v::AbstractVector) = findall(!_ismissing, v)
 
 function missing_indxs(t::StructArray)
     indxs = collect(1:length(t))
-    for vec in getfield(t, :fieldarrays)
+    for vec in StructArrays.components(t)
         filter!(i -> !_ismissing(vec[i]), indxs)
     end
     indxs
diff --git a/src/utils.jl b/src/utils.jl
index 632e7ac..c8af08f 100644
--- a/src/utils.jl
+++ b/src/utils.jl
@@ -90,6 +90,18 @@ function namedtuple(fields...)
     NamedTuple{fields}
 end
 
+
+# not inferrable
+_index_type(::Type{NamedTuple{names, types}}) where {names, types} = _index_type(types)
+_index_type(::Type{Tuple{}}) = Int
+function _index_type(::Type{T}) where {T<:Tuple}
+    S, U = Base.tuple_type_head(T), Base.tuple_type_tail(T)
+    return __index_type(S, U)
+end
+_index_type(::Type{NTuple{N, S}}) where {N, S} = __index_type(S)
+__index_type(::Type{S}, ::Type{U}=Tuple{}) where {S, U} =
+    IndexStyle(S) isa IndexCartesian ? CartesianIndex{ndims(S)} : _index_type(U)
+
 """
     arrayof(T)
 
@@ -102,20 +114,20 @@ Base.@pure function arrayof(S)
         Vector{Union{}}
     elseif T <: Tuple
         coltypes = Tuple{map(arrayof, fieldtypes(T))...}
-        Columns{T, coltypes, index_type(coltypes)}
+        Columns{T, coltypes, _index_type(coltypes)}
     elseif T <: NamedTuple
         if fieldcount(T) == 0
             coltypes = NamedTuple{(), Tuple{}}
-            Columns{NamedTuple{(), Tuple{}}, coltypes, index_type(coltypes)}
+            Columns{NamedTuple{(), Tuple{}}, coltypes, _index_type(coltypes)}
         else
             coltypes = NamedTuple{fieldnames(T), Tuple{map(arrayof, fieldtypes(T))...}}
-            Columns{T, coltypes, index_type(coltypes)}
+            Columns{T, coltypes, _index_type(coltypes)}
         end
     elseif (T <: Union{Missing, String, WeakRefString} && Missing <: T) || T <: Union{String, WeakRefString}
         StringArray{T, 1}
     elseif T <: Pair
         coltypes = NamedTuple{(:first, :second), Tuple{map(arrayof, T.parameters)...}}
-        Columns{T, coltypes, index_type(coltypes)}
+        Columns{T, coltypes, _index_type(coltypes)}
     elseif T <: DataValue
         DataValueArray{eltype(T)}
     else